Take a look at the calendar on the official Disneyland website. If there is an earlier opening/later closing time, then it's a good indicator of how busy Disney is predicting crowds. Check out other months to see how the times are up and down. Have a great day!
There are also Fantasmic! shows all this week. Mostly for private parties, but they will be shown at 7:30 (7:00 on Thursday) and they are listed on Disneyland.com. So that means they will be open for guests who are in the Park before it closes at 8:00.